Earbone Fossil (IMAGE) Vanderbilt University Caption The team, one of the first in the world to examine the ability's origins, used a small CT scanner to look inside a 30-million-year-old ear bone fossil from a specimen resembling Olympicetus avitus. Credit Heidi Hall/Vanderbilt University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.